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Open AccessArticle

False Sequential Command Attack of Large-Scale Cyber-Physical Systems

College of Computer, National University of Defense Technology, Changsha 410073, China
Department of Electronic Information and Electrical Engineering, Changsha University, Changsha 410022, China
Institute of systems engineering, Academy of Military Sciences, Beijing 100141, China
Author to whom correspondence should be addressed.
Electronics 2018, 7(9), 176;
Received: 31 July 2018 / Revised: 23 August 2018 / Accepted: 31 August 2018 / Published: 4 September 2018
(This article belongs to the Special Issue Cyber-Physical Systems)
Previous studies have demonstrated that false commands can cause severe damage to large-scale cyber-physical systems (CPSs). We focus on a kind of threat called false sequential command attack, with which attackers can generate false sequential commands, resulting in the illegal control of the physical process. We present a feasible attack model. Attackers delay the disaggregation of former commands by manipulating maliciously sub-controllers. Simultaneously, bad feedback data is injected to defeat the controller to issue latter commands. Thus, false command sequence is executed and the disruption of physical process can be obtained. It is also difficult for the detector to identify such attacks as injecting bad data. We also discuss other possible attack paths and analyze the corresponding disadvantages. Compared with other paths, the proposed model is more feasible and has more difficulties to be detected. A case study is given to validate the feasibility and effectiveness of proposed false sequential command attack model. Finally, we discuss the possible countermeasure. View Full-Text
Keywords: cyber-physical system; sequential command; security; threat model; false data injection cyber-physical system; sequential command; security; threat model; false data injection
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Xiong, Y.; Yang, Z.; Wang, B.; Xun, P.; Deng, T. False Sequential Command Attack of Large-Scale Cyber-Physical Systems. Electronics 2018, 7, 176.

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